/*
 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package java.text.spi;

import java.text.DateFormat;
import java.util.Locale;
import java.util.spi.LocaleServiceProvider;

/**
 * An abstract class for service providers that
 * provide concrete implementations of the
 * {@link java.text.DateFormat DateFormat} class.
 *
 * @since 1.6
 */
public abstract class DateFormatProvider extends LocaleServiceProvider {

  /**
   * Sole constructor.  (For invocation by subclass constructors, typically
   * implicit.)
   */
  protected DateFormatProvider() {
  }

  /**
   * Returns a new <code>DateFormat</code> instance which formats time
   * with the given formatting style for the specified locale.
   *
   * @param style the given formatting style.  Either one of {@link java.text.DateFormat#SHORT
   * DateFormat.SHORT}, {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, {@link
   * java.text.DateFormat#LONG DateFormat.LONG}, or {@link java.text.DateFormat#FULL
   * DateFormat.FULL}.
   * @param locale the desired locale.
   * @return a time formatter.
   * @throws IllegalArgumentException if <code>style</code> is invalid, or if <code>locale</code>
   * isn't one of the locales returned from {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
   * getAvailableLocales()}.
   * @throws NullPointerException if <code>locale</code> is null
   * @see java.text.DateFormat#getTimeInstance(int, java.util.Locale)
   */
  public abstract DateFormat getTimeInstance(int style, Locale locale);

  /**
   * Returns a new <code>DateFormat</code> instance which formats date
   * with the given formatting style for the specified locale.
   *
   * @param style the given formatting style.  Either one of {@link java.text.DateFormat#SHORT
   * DateFormat.SHORT}, {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM}, {@link
   * java.text.DateFormat#LONG DateFormat.LONG}, or {@link java.text.DateFormat#FULL
   * DateFormat.FULL}.
   * @param locale the desired locale.
   * @return a date formatter.
   * @throws IllegalArgumentException if <code>style</code> is invalid, or if <code>locale</code>
   * isn't one of the locales returned from {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
   * getAvailableLocales()}.
   * @throws NullPointerException if <code>locale</code> is null
   * @see java.text.DateFormat#getDateInstance(int, java.util.Locale)
   */
  public abstract DateFormat getDateInstance(int style, Locale locale);

  /**
   * Returns a new <code>DateFormat</code> instance which formats date and time
   * with the given formatting style for the specified locale.
   *
   * @param dateStyle the given date formatting style.  Either one of {@link
   * java.text.DateFormat#SHORT DateFormat.SHORT}, {@link java.text.DateFormat#MEDIUM
   * DateFormat.MEDIUM}, {@link java.text.DateFormat#LONG DateFormat.LONG}, or {@link
   * java.text.DateFormat#FULL DateFormat.FULL}.
   * @param timeStyle the given time formatting style.  Either one of {@link
   * java.text.DateFormat#SHORT DateFormat.SHORT}, {@link java.text.DateFormat#MEDIUM
   * DateFormat.MEDIUM}, {@link java.text.DateFormat#LONG DateFormat.LONG}, or {@link
   * java.text.DateFormat#FULL DateFormat.FULL}.
   * @param locale the desired locale.
   * @return a date/time formatter.
   * @throws IllegalArgumentException if <code>dateStyle</code> or <code>timeStyle</code> is
   * invalid, or if <code>locale</code> isn't one of the locales returned from {@link
   * java.util.spi.LocaleServiceProvider#getAvailableLocales() getAvailableLocales()}.
   * @throws NullPointerException if <code>locale</code> is null
   * @see java.text.DateFormat#getDateTimeInstance(int, int, java.util.Locale)
   */
  public abstract DateFormat
  getDateTimeInstance(int dateStyle, int timeStyle, Locale locale);
}
